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Inner particle reinforced cylinder liner and method of making the same

A particle reinforcement and cylinder liner technology, which is applied to cylinders, cylinder heads, machines/engines, etc., can solve the problems of long time for melting silicon particles, affecting the service life of cylinder liners, and easy peeling of the reinforcement layer, so as to save processing procedures , Saving raw materials and low manufacturing cost

Inactive Publication Date: 2012-02-08
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires a laser and its control instruments and equipment, and the process is complicated; the laser is a point light source, so it takes a long time to melt the silicon particles and the production efficiency is low; the cylinder liner reinforcement layer has a porosity of about 1%, and the hole size is 0.1-0.5mm , so the reinforcement layer of the cylinder liner is easy to peel off, which affects the service life of the cylinder liner

Method used

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  • Inner particle reinforced cylinder liner and method of making the same
  • Inner particle reinforced cylinder liner and method of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The reinforcement layer is located in the primary crystal Si and Mg on the inner surface of the cylinder liner 2 The Si reinforced particles are 10% by volume, and the primary Si and Mg 2 Among the mixed particles of Si, primary Si accounts for 20% by volume, and the particle size of primary Si is 20-120 μm, Mg 2 The particle size of Si is 20-40μm.

Embodiment 2

[0025] The reinforcement layer is located in the primary crystal Si and Mg on the inner surface of the cylinder liner 2 The Si reinforcement particles are 20% by volume, and the volume percentage of the reinforcement particles in this embodiment makes the mechanical properties and wear resistance of the cylinder liner better than that of Embodiment 1; in primary Si and Mg 2 Among the mixed particles of Si, the primary crystal Si accounts for 50% by volume, and the particle size of the primary crystal Si is 20-120 μm, Mg 2 The particle size of Si is 20-40μm.

Embodiment 3

[0027] The reinforcement layer is located in the primary crystal Si and Mg on the inner surface of the cylinder liner 2 The Si reinforcement particles are 35% by volume, and the volume percentage of the reinforcement particles in this embodiment makes the mechanical properties and wear resistance of the cylinder liner better than that of Example 2; in primary Si and Mg 2 Among the mixed particles of Si, the primary crystal Si accounts for 35% by volume, and the particle size of the primary crystal Si is 20-120 μm, Mg 2 The particle size of Si is 20-40 μm, and the volume percentage content of primary Si in the reinforced particles of this embodiment makes the mechanical performance and wear resistance of the cylinder liner better than that of the second embodiment.

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Abstract

The invention discloses an inner layer particle reinforced cylinder liner and a manufacturing method thereof, comprising a cylinder liner base body, the cylinder liner base body includes a radially inner reinforced layer and an outer non-reinforced layer, and the reinforced layer is distributed on the cylinder liner by reinforcing particles Composed in the matrix, the reinforced layer and the non-reinforced layer are combined through a metallurgically bonded transition layer. The transition between the reinforced layer and the non-reinforced layer of the present invention is uniform and gentle, stable and firm, and prolongs the service life of the cylinder liner. The cylinder liner is light in weight, low in porosity, and mechanically Good performance and thermal performance, improve the working efficiency of the engine, and the manufacturing process is simple, high production efficiency, the content of reinforcing particles in the non-reinforced layer is zero, while increasing the wear resistance of the inner layer, it does not affect the cylinder liner Overall tensile strength and other mechanical properties, the cylinder liner adopts the centrifugal casting method to form a blank with segregated inner layer particles, and then the blank is heat treated and machined to obtain it.

Description

technical field [0001] The invention relates to an engine cylinder component, in particular to an inner particle reinforced cylinder liner and a manufacturing method thereof. Background technique [0002] The cylinder liner is an important part of the internal combustion engine. The mechanical and thermal properties of the cylinder liner have an important impact on the working efficiency, service life and working state of the engine. The traditional engine cylinder liner material is mainly alloy wear-resistant cast iron or steel plate. With the further strengthening of the awareness of energy saving and environmental protection, the requirements for weight reduction of automobiles are getting higher and higher. Then there is the emergence of cylinder liners made of materials such as aluminum alloys with low density. In order to increase the mechanical properties and thermal In terms of performance, there are two methods of manufacturing aluminum alloy cylinder liners in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F1/00B22D15/02B22D13/00
Inventor 刘昌明翟彦博谢勇王开
Owner CHONGQING UNIV
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